Please answer this !!!! Its very urgent .. 10 points to best answer...?

Question

Hey can we have a low voltage A.C.(Alternating Current) & a High Voltage D.C(Direct Current)...

If yes, how and what are the examples of it and applications of it ???

Can a transformer (electric) will work on a high voltage D.C. or low voltage A.C.....

Please answer this..
Its very very urgent...............

Thank you.......!!!!!!!

Answer 1

The main point you should know is that transformers only work with AC.

Basically they step down a high voltage (low current) to a low voltage (high current) or the reverse would be a step up. They could be simply 1:1, just to isolate one circuit from another one.

Answer 2

Simple answer: No



Now you can apply either AC or DC voltage to a transformer there's nothing to prevent you from doing that however the device will behave differently for each type of voltage.



AC: An AC input on the primary coil will induce and AC out put on the secondary coil. If the "number-of-turns" on the secondary equal those on the secondary then the voltage "induced" on the secondary coil will be equal to the primary coil. This is called an isolation transformer (ISO meaning equal). If the number-of -turns is less than the primary the output will be less than the primary. This is called a step-down transformer. If the number-of-turns is greater the output will be higher than the primary. This is known as a step-up transformer.



DC: In the DC input case the transformer acts like a coil on an automobile. Voltage appears on the primary coil but is not induced to the secondary until voltage is removed. Removal of the voltage causes the magnetic on the primary to collapse inducing DC on the secondary. In case where the number of turns on the secondary coil are significantly greater than the primary, a low voltage high current DC input (say 12 volts 300 amps) can produce a static spark of roughly 35,000 volts with relatively low current.

Answer 3

Well A.C. can be generated at both high and the low voltages so is the case with the D.C. ie both the cases mentioned by you are possible.



But, transformer will work only on the AC( high or low) as it works the principle on magnetic induction. D.C. voltage wont pass through it.



Low voltage AC ca work on a transformer... ._.

Answer 4

1.

We can have high voltage dc and low voltage ac.

High voltage DC is used in train electric traction

Low voltage AC is used in small voltage rectifiers.

ex. The 230 v AC is stepped down to convenient low voltage AC and then rectified to DC supply in electronic circuits.

Transformers are working on the principle of induction.

For induction AC supply is needed.

Transformers won't work in DC supplies.

Working in low or high voltages of AC depends on the winding's rating of the transformer.

Answer 5

ya u can have ac and dc.AC example is dynamo..And dc example is simple dry cell.ac is mainly used for generators,highspeed magnets,transformers etc,dc in domestic usetransformer can work in ac and dc.but more on ac.

Answer 6

for this you have to define what is high what is low , however you can have both.

Transformer will NOT work on high or low DC.

Transformers will work on only AC(High or low )

ok.